Personne

Pascal Junod

Publications associées (21)

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FOX: a new family of block ciphers

Serge Vaudenay, Pascal Junod

In this paper, we describe the design of a new family of block ciphers based on a Lai-Massey scheme, named FOX. The main features of this design, besides a very high security level, are a large implementation flexibility on various platforms as well as hig ...

2004

FOX specifications v1.1

Serge Vaudenay, Pascal Junod

In this document, we describe the design of a new family of block ciphers, called FOX. The main goals of this design, besides a very high security level, are a large implementation flexibility on various platforms as well as high performances. The high-lev ...

2004

Although linear perfect diffusion primitives, i.e. MDS matrices, are widely used in block ciphers, e.g. AES, very little systematic work has been done on how to find ``efficient'' ones. In this paper we attempt to do so by considering software implementati ...

2004

Sécurité informatique, exercices corrigés

Gildas Avoine, Philippe Oechslin, Pascal Junod

Les attaques informatiques sont aujourd'hui l'un des fléaux de notre civilisation. Chaque semaine amène son lot d'alertes concernant des failles dans la sécurité des systèmes d'information, exploitées par pirates et autres créateurs de virus. Ces attaques ...

Vuibert2004

In this paper, we consider the statistical decision processes behind a linear and a differential cryptanalysis. By applying techniques and concepts of statistical hypothesis testing, we describe precisely the shape of optimal linear and differential distin ...

2003

Optimal Key Ranking Procedures in a Statistical Cryptanalysis

Serge Vaudenay, Pascal Junod

Hypothesis tests have been used in the past as a tool in a cryptanalytic context. In this paper, we propose to use this paradigm and define a precise and sound statistical framework in order to optimally mix information on independent attacked subkey bits ...

2003

FOX Specifications v1.0

Serge Vaudenay, Pascal Junod

2003

Cluster Management Software

Serge Vaudenay, Nicolas Bonvin, Pascal Junod

Cluster Management Software ...

2003

On the Complexity of Matsui's Attack

Pascal Junod

Linear cryptanalysis remains the most powerful attack against DES at this time. Given

2^{43}

known plaintext-ciphertext pairs, Matsui expected a complexity of less than

2^{43}

DES evaluations in 85% of the cases for recovering the key. In this paper, w ...

2001

On the Complexity of Matsui's Attack

Pascal Junod

Linear cryptanalysis remains the most powerful attack against DES at this time. Given

2^{43}

known plaintext-ciphertext pairs, Matsui expected a complexity of less than

2^{43}

DES evaluations in 85% of the cases for recovering the key. In this paper, w ...

2001